Concrete Strength Calculator
Calculate compressive strength from cylinder or cube test results with grade classification and property estimation.
Test Parameters
150.0 kN (33721 lbf)
Standard Sizes:
Cylinder: 150mm x 300mm or 100mm x 200mm
Cube: 150mm or 100mm
Compressive Strength
8.49 MPa
1231 psi | Grade: M10
Estimated 28-Day Strength
8.49 MPa
1231 psi
Cube Equivalent
10.61 MPa
Age Factor: 1.00
Modulus of Elasticity
13693 MPa
2000 ksi
Flexural Strength (est.)
2.04 MPa
0.7√fck
Test Area
17671 mm² (27.39 in²)
Concrete Grade Classification
| Grade | Strength (MPa) | Strength (psi) | Application |
|---|---|---|---|
| M15 | 15 | 2175 | Blinding, leveling |
| M20 | 20 | 2900 | Slabs, beams |
| M25 | 25 | 3625 | Footings, columns |
| M30 | 30 | 4350 | Heavy structures |
| M40+ | 40+ | 5800+ | Prestressed, bridges |